Rich,
As stated by John C the vaccum pump is up front behind the access pannel to the right of the generator. When you turn on your ignition key you will hear it initially run filling a vacuum reservoir/ball. It will periodically run as vacuum is gettting low when used switching heater/AC mode of operaion

<BLOCKQUOTE class="ip-ubbcode-quote"><div class="ip-ubbcode-quote-title">quote:</div><div class="ip-ubbcode-quote-content">Originally posted by rgrstndgby:
Don't know how to do the smiley </div></BLOCKQUOTE>

Across the top bar in the window where you are typing is a row of selections....The first one from the left is a smiley face.
When you click on it you will see the complete "directory" of available "smiley" items to choose from..

<BLOCKQUOTE class="ip-ubbcode-quote"><div class="ip-ubbcode-quote-title">quote:</div><div class="ip-ubbcode-quote-content">This is in humor, not nit picky,(dont know how to do the smileys) but the pump is attempting to empty the bottle, not fill it...rgr... </div></BLOCKQUOTE>

You're right. It will be the day when vacuum fills something. Had a long day yesterday

<BLOCKQUOTE class="ip-ubbcode-quote"><div class="ip-ubbcode-quote-title">quote:</div><div class="ip-ubbcode-quote-content">When you click on it you will see the complete "directory" of available "smiley" items to choose from </div></BLOCKQUOTE>

Well, It isn't a wasted day, It looks like I'm gonna learn something. Im not the most cyber dude in the room.. Thanks, rgr...